And brickwork is constructed at top of brickwork wall distribution box and dense parts of wire pipes
The brickwork comprises a fixed brickwork frame and a hollow lintel, the hollow lintel is formed by pouring concrete, the hollow lintel is installed on the fixed brickwork frame, a long through hole is formed in the middle of the hollow lintel in a penetrating mode, the long through hole is communic...
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Format: | Patent |
Sprache: | chi ; eng |
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